Function bloomHashBitOrFactory

packages/core/src/render3/di.ts:825–847

(
  token: ProviderToken<any> | string,
)

 *   When the returned value is negative then it represents special values such as `Injector`.
 */
export function bloomHashBitOrFactory(
  token: ProviderToken<any> | string,
): number | Function | undefined {
  ngDevMode && assertDefined(token, 'token must be defined');
  if (typeof token === 'string') {
    return token.charCodeAt(0) || 0;
  }
  const tokenId: number | undefined =
    // First check with `hasOwnProperty` so we don't get an inherited ID.
    token.hasOwnProperty(NG_ELEMENT_ID) ? (token as any)[NG_ELEMENT_ID] : undefined;
  // Negative token IDs are used for special objects such as `Injector`
  if (typeof tokenId === 'number') {
    if (tokenId >= 0) {
      return tokenId & BLOOM_MASK;
    } else {
      ngDevMode &&
        assertEqual(tokenId, InjectorMarkers.Injector, 'Expecting to get Special Injector Id');
      return createNodeInjector;
    }
  } else {
    return tokenId;
  }
}

export function bloomHasToken(
  bloomHash: number,